Overview
Brain abscess refers to a localized infection within the brain parenchyma, often resulting from hematogenous spread or direct extension from adjacent structures, posing significant neurological risks 1.Diagnosis
Primary Imaging: Magnetic resonance imaging (MRI) is strongly recommended for accurate diagnosis 1.
Diffusion Imaging: Unusual diffusion findings may be observed, indicating purulent fluid characteristics 4.
Source Identification: Consider potential sources such as dental infections (e.g., Aggregatibacter actinomycetemcomitans) and oropharyngeal infections (e.g., peritonsillar abscess) 23.
Molecular Diagnostics: Recommended if available for identifying causative pathogens 1.Management
Surgical Intervention: Aspiration or excision recommended, especially within 24 hours for patients without severe disease 1.
Antimicrobial Therapy: Initiation of antimicrobial therapy may be delayed pending surgery in suitable candidates 1.
Conservative Treatment: Intravenous antibiotics for conservative management of cerebral abscess, particularly when surgery is not immediately feasible 3.
Address Complications: Manage complications such as hydrocephalus as they arise, e.g., through surgical intervention 3.Special Populations
Pediatrics: Specific guidelines apply, emphasizing the importance of early diagnosis and tailored surgical interventions 1.
Immunocompetent Adults: Consider less common sources like peritonsillar abscesses, which can lead to brain abscesses 3.Key Recommendations
Use magnetic resonance imaging for diagnosis of brain abscess (Evidence: Strong) 1.
Consider delaying antimicrobial therapy until surgical intervention (aspiration or excision) if feasible within 24 hours (Evidence: Moderate) 1.
Employ molecular-based diagnostics when available to identify pathogens (Evidence: Expert opinion) 1.References
1 Bodilsen J, D'Alessandris QG, Humphreys H, Iro MA, Klein M, Last K et al.. European society of Clinical Microbiology and Infectious Diseases guidelines on diagnosis and treatment of brain abscess in children and adults. Clinical microbiology and infection : the official publication of the European Society of Clinical Microbiology and Infectious Diseases 2024. link
2 Brady P, Bergin S, Cryan B, Flanagan O. Intracranial abscess secondary to dental infection. Journal of the Irish Dental Association 2014. link
3 Sankararaman S, Riel-Romero RM, Gonzalez-Toledo E. Brain abscess from a peritonsillar abscess in an immunocompetent child: a case report and review of the literature. Pediatric neurology 2012. link
4 Lee EJ, Ahn KJ, Ha YS, Oh HE, Park CS, Song SY et al.. Unusual findings in cerebral abscess: report of two cases. The British journal of radiology 2006. link